One cool jutsu could be the Water Spiral. Naruto would spin water around his body at a high speed, creating a protective and offensive spiral. Another could be the Water Mirror Clone. He creates clones made of water that can reflect attacks back at the enemy. And there's the possibility of the Water Tsunami, where he summons a huge wave of water to overwhelm his foes.
Naruto could have a unique jutsu called the Water Phoenix. He shapes water into the form of a phoenix that can fly and attack enemies with its beak and wings made of water. There could also be the Water Chains, where he creates chains of water to bind his opponents. And the Water Illusion, which creates illusions within water, making it difficult for the enemy to distinguish between reality and illusion.
In the fanfiction, Naruto might be able to do the Aqua - Blade. He forms sharp blades of water from thin air and uses them to cut through his opponents. The Water Dome is also a great jutsu. He creates a large dome of water around himself or his allies for protection. Additionally, the Water Vortex, which sucks in the enemies into a swirling vortex of water, would be a very cool and powerful jutsu.
Naruto could develop his water control abilities through intense meditation. By focusing his chakra and mind, he can better understand the nature of water. He may also study the movements of water in nature, such as how rivers flow and how water droplets form. This knowledge would then be applied to his jutsu, gradually improving his control.
In some fanfictions, Naruto might control water through special training. Maybe he discovers a hidden jutsu or a unique chakra manipulation technique that allows him to bend water to his will. For example, he could learn from a water - based ninja clan or an ancient scroll.
One way could be through a new form of Rasengan. Imagine a Water - Style Rasengan where he combines his wind - natured chakra with water - based chakra he has somehow acquired. Another way might be that he has a special kekkei genkai related to water that gets unlocked in the fanfiction.
Jiraiya could be one. Although he is known more for his fire and earth - based jutsu, he has vast knowledge and could guide Naruto in using water affinity in unique ways. Another could be Kisame. He is a master of water jutsu. His skills with water manipulation are top - notch, and he could teach Naruto some really powerful and advanced water techniques.
A 'Solar - Flare Rasengan'. Naruto could combine his wind - style chakra with some kind of solar - based energy he discovers. This jutsu would be like a super - charged Rasengan that emits a blinding light as well as powerful wind - based damage.
Sure. A lot of fanfiction authors explore the idea of Naruto being a master of water release. They might do this to show his growth beyond his original set of skills in the canon series. For example, he could use water release to counter fire - type jutsus more effectively, or he could develop a new signature water - based move that no one else in the Naruto universe has.
The Water Dragon Jutsu could be modified to carry other elements within it. For example, the user could infuse lightning chakra into the water dragon. So when the dragon attacks, it not only hits with the force of water but also delivers electric shocks. This would be a great new battle strategy as it combines two different elements for a more powerful and unexpected attack.
Maybe in the fanfiction, the Water Dragon Jutsu has been corrupted by an evil force. Naruto and his friends have to find a way to purify it. They might need to travel to an ancient water temple where they face various trials and battles with dark water creatures that were created due to the jutsu's corruption.
There could be a jutsu that allows for instant teleportation across long distances. This jutsu might be a new discovery in the fanfiction world, perhaps created by a character who has been experimenting with space - time ninjutsu. They might use it to quickly get in and out of battles or reach far - off places in a blink.
One possible ability is the control of entropy. Naruto could reverse the decay or disorder of things. He could repair broken objects or even heal wounds by reversing the natural process of damage. Also, he could control electromagnetic fields. This would allow him to disrupt enemy electronics if there were any in the Naruto world, or he could use it to attract or repel metal objects.